-- 写header
ngx.header.name = "Eason Lee"
-- 多个响应头
ngx.header.data = {"red","stone"}
-- 输出响应，类似java的System.out.println()
ngx.say("Welcome"," to "," Shenzhen","<br />")
ngx.print("he"," : "," winner?","<br />")

-- 200状态码
return ngx.exit(200)